<?php
//dezend by http://www.yunlu99.com/ QQ:270656184
defined('BASEPATH') || exit('No direct script access allowed');
class CI_DB_pdo_result extends CI_DB_result
{
	public function num_rows()
	{
		if (is_int($this->num_rows)) {
			return $this->num_rows;
		}
		else if (0 < count($this->result_array)) {
			return $this->num_rows = count($this->result_array);
		}
		else if (0 < count($this->result_object)) {
			return $this->num_rows = count($this->result_object);
		}
		else if (0 < ($num_rows = $this->result_id->rowCount())) {
			return $this->num_rows = $num_rows;
		}

		return $this->num_rows = count($this->result_array());
	}

	public function num_fields()
	{
		return $this->result_id->columnCount();
	}

	public function list_fields()
	{
		$field_names = array();
		$i = 0;

		for ($c = $this->num_fields(); $i < $c; $i++) {
			$field_names[$i] = @$this->result_id->getColumnMeta($i);
			$field_names[$i] = $field_names[$i]['name'];
		}

		return $field_names;
	}

	public function field_data()
	{
		try {
			$retval = array();
			$i = 0;

			for ($c = $this->num_fields(); $i < $c; $i++) {
				$field = $this->result_id->getColumnMeta($i);
				$retval[$i] = new stdClass();
				$retval[$i]->name = $field['name'];
				$retval[$i]->type = $field['native_type'];
				$retval[$i]->max_length = 0 < $field['len'] ? $field['len'] : NULL;
				$retval[$i]->primary_key = (int) (!empty($field['flags']) && in_array('primary_key', $field['flags'], true));
			}

			return $retval;
		}
		catch (Exception $e) {
			if ($this->db->db_debug) {
				return $this->db->display_error('db_unsupported_feature');
			}

			return false;
		}
	}

	public function free_result()
	{
		if (is_object($this->result_id)) {
			$this->result_id = false;
		}
	}

	protected function _fetch_assoc()
	{
		return $this->result_id->fetch(PDO::FETCH_ASSOC);
	}

	protected function _fetch_object($class_name = 'stdClass')
	{
		return $this->result_id->fetchObject($class_name);
	}
}

?>
